JP2553961B2 - Form moving / assembling device for shield construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an underground road, railroad, water and sewer system,
A device for moving, assembling and dismantling a formwork used when forming a concrete lining in a shield machine used for constructing tunnels for power / communication facilities and underground spaces such as underground shopping malls and underground parking spaces .

(Prior Art) Generally, in shield excavators used in mud pressure type, mud pressure type and earth pressure type shield construction methods, an inner formwork for cast-in-place lining behind the shield excavator is used for assembly, demolding and transportation. A formwork erector for serving is provided.

Explaining the mud pressure type, for example, a shield machine excavates the ground and discharges the excavated earth and sand with an earth discharge pipe inserted with a screw conveyor, and gradually advances while taking a reaction force to the end surface of the inner formwork. Then, the inner formwork is demolded from the part of the concrete lining that has been cured by the formwork erector, the demolded inner formwork is transported forward, and the inner formwork transported by the formwork erector is further transferred. assemble. Then, fresh concrete is placed in the gap between the assembled inner formwork and the wall surface of the excavation.

By repeating such work, the concrete lining of the tunnel in the shield construction method is formed.

(Problems to be Solved by the Invention) However, in the above-mentioned cast-in-place lining method,
In order to move the formwork erector in the longitudinal direction of the tunnel, a traveling rail had to be laid through the girder on the assembled inner formwork. Therefore, when the inner formwork is removed from the mold as the shield machine advances, the inner formwork is transported forward and assembled again as a formwork, the traveling rails for the formwork erector must also be disassembled and assembled in sequence. It took time and effort.

Moreover, when the tunnel has a small diameter (about 3000 mm), it is difficult to dispose the soil discharge pipe and the formwork erector inside the tunnel because of its small space.

The present invention has been made in view of the above problems, and eliminates the work related to the rails for traveling, and a shield construction method capable of cooperating with a device for transporting a formwork even in a tunnel of small diameter and an earth pipe. An object of the present invention is to provide a moving / assembling device for molds.

(Means for Solving the Problem) The gist of solving the above-mentioned problems of the moving and assembling apparatus for a shield construction form according to the present invention and achieving the object is to remove excavated earth and sand behind a shield machine. Supporting one end of the soil discharge pipe, and providing a shaft pedestal that can run freely,
A guide rail is provided on the outer peripheral surface of the soil discharge pipe in parallel with the axis of the soil discharge pipe, and the soil discharge pipe is inserted to form a cylinder body movable along the guide rail. A moving device for moving with respect to the clay pipe is provided, and a rotary drum that is rotatable in the circumferential direction with respect to the cylinder body is provided, and the rotary drum is provided with a formwork and a jack for carrying a reinforcing bar. Exist.

(Operation) As described above, according to the moving / assembling apparatus for a shield method formwork according to the present invention, it is possible to dismantle / move / assemble the formwork by the carrying device using the discharge pipe as a guide for traveling, and thus the small diameter It will be possible to secure a space for installing the transportation device even in the tunnel.

Further, the guide rails of the earth scavenging pipe reinforce the earth scavenging pipe, and the rigidity is increased with respect to the bending load applied to the earth scavenging pipe between the carrier and the formwork.

Unlike the conventional case, the running rail is not laid on the existing formwork, and the equipment in the tunnel is simplified.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a moving / assembling device 1 for a shield construction formwork.
It is a side view which shows the whole. The moving / assembling device 1 for the formwork for the shield construction method is provided behind the shield machine 2
It is formed by inserting the earth discharging pipe 3 for discharging the excavated earth and sand. That is, for the transporting device 1, a shaft pedestal 4 is provided, which supports one end portion 3a of the earth discharging pipe 3 for discharging excavated earth and sand and can travel freely. As shown in FIG. 6, the shaft pedestal 4 is provided with a presser jack 4b on the upper part of the pedestal body 4a fixed to the one end 3a of the soil discharge pipe 3, and on the lower part of the pedestal body 4a. The concrete lining 8 is provided with wheels 9 that roll on the concrete lining 8.
On the other hand, the shaft pedestal 4 is freely movable.

Then, rectangular guide rails 5, 5 are provided on the outer peripheral surface of the soil discharge pipe 3 in parallel with the axis of the soil discharge pipe 3.

Then, the soil discharge pipe 3 is inserted and the guide rail 5 is inserted.
A cylindrical main body (1a) is formed which is movable along. The cylinder body 1a is provided with a moving device 6 for moving with respect to the earth discharging pipe 3.

The moving device 6 includes a driving motor 10 and a traveling spur gear that is rotated via a belt 11 wound between pulleys.
12 is provided, and the traveling spur gear 12 has a shaft 12a and a bearing rotatably attached to the shaft 13.

The traveling spur gear 12 meshes with the teeth of gear rails 14, 14 provided on the outer surface of the soil discharge pipe 3 in parallel with the axis.

In addition, the traveling wheels 15 rolling on the guide rails 5 and 5 soil.
Are rotatably attached to the inner surface of the cylinder body 1a and are pivotally attached to a plurality of positions. In this embodiment, the cylindrical body 1a is provided at two locations facing each other in the circumferential direction and at four locations in the axial direction.

With the traveling device 6 and the traveling wheels 15 traveling on the guide rails, the cylinder main body 1a is attached to the earth discharging pipe 3.
Is movable in the axial direction.

Next, a cylindrical rotary drum 1b that is rotatable in the circumferential direction of the cylinder body 1a is provided.

The rotary drum 1b is provided with a rotary wheel 17 that rolls on a rectangular rotary rail 16 that is wound all around in the circumferential direction on the outer surface of the cylinder body 1a, and the inner wall of the one end 1c gear
It is formed by carving 18. In this embodiment, the rotating wheels 17 are provided at eight locations in the circumferential direction of the rotary drum 1b and at two locations in the axial direction.

Then, in order to rotate the rotary drum 1b with respect to the cylinder body 1a, a rotation motor 19 is provided on the outer surface of the cylinder body 1a at the one end portion 1c side, and the spur gear 20 is fixed to the motor rotation shaft. Then, the spur gear 20 is meshed with the internal gear 18.

As shown in the figure, the rotation motor 19 is provided at two places, and the rotation motor 19 is rotated by an instruction such as a remote operation to rotate the rotary drum 1b forward and backward. In this way, the rotating device 7 for the rotating drum 1b is formed.

Next, the rotary drum 1b is provided with a jack 22 for grasping the mold 21 and moving it up and down.

As shown in FIG. 4 and FIG. 5, this jack 22 is attached from one of the other molds 21 with the molds 21, 21 in which the separable molds 21 are rotatably connected by a hinge 21a as one set. In order to be disassembled, the rotary drum 1b is obliquely attached at two locations in the circumferential direction, and is attached at two locations in the axial direction.

In order to hold the mold 21 with the jack 22, the rod tip portion of the jack 22 is inserted into the connecting portion 21b of the mold 21 and connected with a locking pin or the like.

Further, an inner side wall of the cylinder body 1a is provided with anti-rotation wheels 23 which hold the side wall of the gear rail 14 and which are rotatable so that the cylinder body 1a does not rotate in the circumferential direction of the soil discharge pipe 3. ing.

In this embodiment, the anti-rotation wheels 23 are provided at two locations facing each other in the circumferential direction of the cylinder body 1a and at four locations in the axial direction. As a result, the anti-rotation wheel 23 holds the gear rail 14 between them, so that the rotation drum 1b can be prevented from rotating in the circumferential direction of the cylinder body 1a.

As described above in detail, the moving / assembling device 1 for the shield construction form is formed, mounted on the soil discharge pipe 3 of the shield machine 2, and can be moved to the soil discharge pipe 3 in the axial direction by remote control. The work of dismantling, carrying and assembling the formwork 21 can be performed with this carrying device 1.

 Next, the usage method will be described.

First, the shaft support 4 is pressed and the rod of the jack 4b is extended. Then, the tip of the rod is brought into contact with the existing concrete lining portion to fix the position of the shaft support 4. Then, the carrier device 1 is disassembled by using the rearmost formwork 21 with the jack 22. At this time, 6 molds 21 for one lap
Are disassembled two by two via the hinge 21a, the rotating motor 19 is appropriately rotated to rotate the rotary drum 1b via the internal gear 18.
By changing the direction of the jack 22, the disassembling work of three times will complete one lap.

Then, the mold 21 held by the jack 22 is pulled toward the soil discharge pipe 3 (states shown in FIGS. 4 and 5), the motor 10 is rotated in the required direction, and the traveling spur gear 12 and the gear rail 14 meshed therewith. Through the carrier 1 whole shield machine 2
Forward in the direction.

Then, after moving the carrier device 1 to the most distal end of the formwork, the rod of the jack 22 is extended to assemble the formwork 21 with the excavated wall surface at an appropriate interval. After assembling this form 21 in the entire circumferential direction of the tunnel, refresh concrete is poured into the gap. After that, the concrete is cured, and the propelling jack of the shield machine 2 applies a reaction force to the form 21 to move forward.

Further, even while the transporting device 1 is performing work such as disassembling the formwork 21, the earth and sand excavated by the cutter 2a of the shield machine 2 is carried by the screw conveyor 24, and by the screw conveyor of the discharge pipe 3. It is discharged from the discharge port 25.

As described above, even in a small-diameter tunnel, the shield work method moving / assembling apparatus 1 according to the present invention makes it possible to smoothly carry the work of the form instead of the conventional erector.

Further, a reinforcing bar attachment may be attached to the jack 22 of the rotary drum 1b to arrange the reinforcing bar 26 in the carrying device 1.

In addition, it goes without saying that, in the carrying device 1, the design of the moving device 6 and the turning device 7 can be changed by a known technique suitable for the purpose.

(Effects of the Invention) As described above, the moving and assembling apparatus for the shield method formwork according to the present invention is carried behind the shield machine, while supporting one end of the earth-discharging pipe for discharging excavated earth and sand. A flexible shaft pedestal is provided, a guide rail is provided on the outer peripheral surface of the earth-discharging pipe in parallel with the axis of the earth-discharging pipe, and the earth-discharging pipe is inserted to form a tube body movable along the guide rail. However, the cylinder body is provided with a moving device for moving with respect to the earth discharging pipe, and a rotary drum rotatable in the circumferential direction with respect to the cylinder body is provided, and the mold and the rebar are conveyed to the rotary drum. Since the installation jack was provided, the equipment was complicated, such as laying a traveling rail in the conventional Erector, but it is possible to secure a sufficient space to install the transport device even in a tunnel with a small diameter and shorten the construction period.

Also, unlike the conventional method, the running rail is not laid on the existing formwork, and the equipment inside the tunnel is simplified.
Cost reduction.

[Brief description of drawings]

FIG. 1 is a side view showing the entire moving / assembling device for a formwork for a shield construction method according to the present invention, FIG. 2 is a plan view in which the carrying device is also enlarged, and FIG. 3 is a front view thereof. 4 is a sectional view taken along the line I-I of FIG. 3, FIG. 5 is a sectional view taken along the line II-II of FIG. 3, and FIG. 6 is a sectional view taken along the line III-III of FIG. . 1 …… Moving and assembling equipment for shield formwork, 1a …… Cylinder body, 1b …… Rotary drum, 1c …… One end of rotary drum, 2 …… Shield machine, 2a …… Cutter, 3 …… Exhaust pipe, 3a …… One end of the exhaust pipe, 4 …… Shaft pedestal, 4a …… Receiver body, 4b …… Pressing jack, 5 …… Guide rail, 6 …… Moving device, 7 …… Rotating device, 8 …… Concrete lining, 9 …… Wheels, 10 …… Motor, 11 …… Belt, 12 …… Running spur gear, 13 …… Bearing, 14 …… Gear rail, 15 …… Running wheel, 16 …… Rotating rail , 17 ... Rotating wheel, 18 ... Internal gear, 19 ... Rotating motor, 20 ... Spur gear, 21 ... Form, 21a ... Hinge, 21b ... Coupling, 22 ... Jack, 23 ...... Anti-rotation wheels, 24 ...... Screw conveyor, 25 …… Soil discharge port, 26 …… Reinforcing bar.

Front Page Continuation (72) Inventor Yuji Tachikawa 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (56) References JP-A-60-141998 (JP, A)

Claims (1)

(57) [Claims] 1. A shaft pedestal for supporting one end of an earth-discharging pipe for excavating excavated earth and sand and for traveling freely is provided at the rear of the shield machine, and the earth-discharging pipe serves as an axis on the outer peripheral surface of the earth-discharging pipe. Guide rails are provided in parallel, a tube main body is formed into which the soil discharge pipe is inserted and is movable along the guide rail, and a moving device for moving the cylinder main body with respect to the soil discharge pipe is provided, and A moving / assembling device for a shield construction method characterized in that a rotary drum rotatable in the circumferential direction is provided with respect to the cylinder main body, and a jack for carrying a mold and a reinforcing bar is provided on the rotary drum.